How do i change my evanto elements email if it is linked to google?

I have accidentally linked my evanto to my google and no i cannot change my evanto email.

How do i change my evanto elements email if it is linked to google?

The message says i should manage this from google, but when i go to google there is not way to change my evanto email address from my google account

i cant change email !
Some fields are not editable here. Please update them via your Google account. !
i go to my google account there is no way to change ! pleaase help